TY  - JOUR
AU  - Yu. N. Subbotin
TI  - The best approximation of a class of functions by another class
JO  - Matematičeskie zametki
PY  - 1967
SP  - 495
EP  - 504
VL  - 2
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_1967_2_5_a6/
LA  - ru
ID  - MZM_1967_2_5_a6
ER  -